Casio G-Shock (Japan Made) GMC-B2100 Lineup 50th Anniversary Zero to One Series Chronograph Full Metal Series Bluetooth® Tough Solar Dual Time Black Ion Plated Stainless Steel Band Watch GMCB2100ZE-1A GMC-B2100ZE-1A

Celebrate 50 years of Casio watches with a commemorative G-SHOCK timepiece that sparkles with Casio passion for new value and constant innovation.

The GMC-B2100ZE embodies the spirit of craftsmanship inspired by the excitement of “making something from nothing” — the thrill of going from “0” to “1.”

This G-SHOCK full-metal chronograph features a black and gold color scheme that evokes the first flicker of light, that spark of innovative craftsmanship, where the creation of new value begins.

The single gold-color link on an otherwise black ion-plated band is a special touch that catches the eye, flickering like a light that breaks the darkness and illuminates the path to value innovation. The link is also laser engraved with “50th ANNIVERSARY.” As a special design touch, the outer perimeter of the dial is printed with 0’s and 1’s, capturing the Casio devotion to the art of making something from nothing. 

The screw-down crown is designed in the same octagonal shape as the bezel for a more compact timepiece with no sacrifice in outstanding G-SHOCK shock resistance. 

High-density mounting keeps the chronograph module slim, while still providing the advanced functions you love in a compact profile and comfortable fit.

Case / bezel material: Stainless steel
Stainless Steel Band
Solid Band
One-touch 3-fold Clasp
Mineral Glass
Black ion plated case
Black ion plated band
Screw Lock Crown
Neobrite
Shock Resistant
200-meter water resistance
Tough Solar (Solar powered)
LED light (Super Illuminator)
Afterglow
LED:White
Mobile link (Wireless linking using Bluetooth®)
Dual time (Home City time swapping)
1/100-second stopwatch
Measuring capacity: 23:59'59.
Measuring modes: Elapsed time, split time
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Daily alarm
Battery level indicator
Power Saving (hands stop to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
Regular timekeeping:
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (mode and battery, dual time/stopwatch/countdown timer/alarm hour and minute, day)
Day indicator
Regular timekeeping:
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 51.3 × 46.3 × 12.4 mm
Total weight : 171 g